Early fuser roll closure with reduced force

Details Early fuser roll closure with reduced force Early fuser roll closure with reduced force

1982-02-16

1984-02-07

Grimley, A. T.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3FU, 355 77, 219216, 432 60, G03G 1520

Patent

active

044299877

ABSTRACT:
An early roll closure method and apparatus associated with an electrophotographic or xerographic device for fixing a toner image onto a copy sheet by application of heat and pressure. A lower closing force is exerted on the fuser rollers during early roll closure than when fixing an image to a copy sheet. The use of a backup roll made of bare metal facilitates this technique. This early roll closure method also allows the temperature of the heated fuser roll to be reduced along the entire circumference. The early roll closure is only allowed to occur on the first sheet of a copy or fusing run.

REFERENCES:
patent: T947012 (1975-04-01), Brandon et al.
patent: 4038026 (1977-07-01), Wada et al.
patent: 4162847 (1979-07-01), Brandon
patent: 4232959 (1980-11-01), Ateya et al.
patent: 4363549 (1982-12-01), Brown et al.

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